Reconciling Conductance Fluctuations and the Scaling Theory of Localization

We reconcile the phenomenon of mesoscopic conductance fluctuations with the single parameter scaling theory of the Anderson transition. We calculate three averages of the conductance distribution, $\exp \left(〈\ln g〉\right)$, $〈g〉$, and $1/〈R〉$, where $g$ is the conductance in units of $e^2/h$ and $R=1\mathrm{}/g$ is the resistance, and demonstrate that these quantities obey single parameter scaling laws. We obtain consistent estimates of the critical exponent from the scaling of all these quantities.